The Natural Number 1

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Properties of the Number 1

  • Because 1 is not divisible by 2 ...
    • 1 is an odd number
    • 1 has parity 1
    • 1 is not an even number
  • 1 is neither a prime number nor a composite number

Alternative Representations of the Number 1

  • Base 2 (binary): 1
  • Base 8 (octal): 1
  • Base 16 (hexadecimal): 1
  • Roman numeral: I
  • Words: one

Divisors of the Number 1

  • 1 has 1 positive divisor: 1
    • The sum of the positive divisors is 1
  • 1 has no proper divisors
    • The sum of the proper divisors is 0
  • 1 is a deficient number since the sum of the proper divisors is less than 1
  • 1 is not a perfect number
  • 1 is not an abundant number

More Properties of the Number 1

  • 1 is a square number (i.e., square of the natural number 1)
  • 1 is a cube number (i.e., cube of the natural number 1)
  • 1 is a palindromic number (i.e., the digits are the same forwards and backwards)
  • 1 is a Fibonacci number
  • 1 is a Lucas number

1:37 am, Sunday, March 26, 2017 (UTC; +0000)
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